Triangle Angle Sums

A triangle has one angle that measure 45° and one that measures 60°. What is the measure of the third angle?

Will the following three angles for a triangle?

30°, 60°, 90°

Find the measure of the missing angle.

A student is trying to construct triangles using four different sets of angles. The angles in each set are given below. Which set will form a triangle?

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

Solve for x. (Hint: 70 + 60 + 8x + 2 = 180; combine like terms and solve for x)